The Han-Modular system now also allows "blind" insertion by automatic processes. Thanks to the newly developed docking frame, it is now possible to set up a modular docking connector without a housing. This allows the modular system to be used in insertion processes that are not hand-guided. With the new product, users can select and assemble their "customized" connectors themselves. Such connectors are needed for racks in switch cabinets, for example. The rack cassette is slid into the cabinet. The connector sides can now be guided together "blind" and securely inserted. This is achieved by a floating frame which can move freely in a range of +/-2mm. At the same time, very stable leading, centering pins/bushes ensure that the two connector sides are securely connected to each other.